AVR 255 (serv.man3) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 55

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IEC 60065   7ed. (2001) 
 
- Page 3 of 3 - 
 
 
www.nemko.com
 
Report No.  98389 
 
 
14.3.3 
Transformer/motor, constructional requirements 
Transformer 
Part No. 
Insulation 
between 
Insulation Res. 
M Ohms 
Test Volt 
V (60 sec.) 
Clearances / Creepage distances 
Measured 
Required 
CLT(
or
 KLT)5W032ZE 
Pr - sec 
> 100 
3KV (rms) 
10,4 / 10,4 mm 
4,0 / 5,6 mm 
Pr - ic 
> 100 
3KV (rms) 
10,3 / 10,3 mm 
4,0 / 5,0 mm 
 
 
 
 
 
 
CLT(
or
 KLT)5I009ZE 
Pr - Sec 
> 100 
3 kV (rms) 
6,9 / 6,9 mm 
4,0 / 5,0 mm 
Pr - ic 
> 100 
3 kV (rms) 
5,2 / 5,2 mm 
4,0 / 5,0 mm 
 
 
 
 
 
 
Components / construction
 
CLT(
or
 KLT)5W032ZE
 
Windings on two separate bobbins. The bobbins are placed 
in an insulating housing with two compartments, one above  
the other. Bobbin thickness: > 0,4mm. 
Max. Working Voltage: 382Vp/270Vrms
 
 
Components / construction 
CLT(
or
 KLT)5I009ZE 
 
Windings on single bobbin. The center flange provided 
between primary and secondary windings.  
Satisfactory constructed. Bobbin thickness: > 0,4mm. 
Max. Working voltage: 338Vp/239Vrms 
Transformer 
Part No 
Insulation 
Between 
Thick (mm) 
X Number 
Material 
Dielectric strength test
60 sec. 
CLT(
or
 KLT)5W032ZE  Pr - sec 
0,90 mm min. x 1
PET bobbin 
Pass  *) 
Pr - ic 
0,90 mm min. x 1
PET bobbin 
Pass  *) 
 
 
 
 
 
CLT(
or
 KLT)5I009ZE 
 
Pr - sec 
0,70 mm min. x 2
0,70 mm min. x 1
PBT bobbin flange 
PBT bobbin cap. 
Pass   *) 
Pr - ic 
0,60 mm min. x 1
PBT bobbin 
Pass   *) 
Pr - ic 
0,60 mm min. x 1
PBT bobbin cap. 
Pass   *) 
 
 
 
 
 
*) Test voltage: 3000 Vrms. 
 
17.1 
Torque test to Table 20: 
Screw 
Diameter 
With 
Without
Material 
Torque test (Nm) 
Location / function 
(mm) 
Head 
Head 
Screw
Nut 
Fulfilled / Remarks 
Fixing of top cover 
(sides) 
4,0 x  - 
Metal
Metal
Tested with 1,2Nm,  
5 times / Pass 
Fixing of top cover 
(rear) 
3,0 x  - 
Metal
Metal
Tested with 0,5Nm,  
5 times / Pass 
 
 
 
 
 
 
 
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